Reproductive Biology of Selaginella
Open Access
- 1 April 1973
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 51 (4) , 718-722
- https://doi.org/10.1104/pp.51.4.718
Abstract
Control clumps of Selaginella wallacei Heiron., sprayed with distilled water with Tween 20, produced a high proportion of microsporangia. Similar clumps sprayed with 2-chlorethyl-phosphonic acid, and ethylene-releasing compound (Ethephon), at 7.65 and 76.5 mg/liter produced almost exclusively megasporangia. Treatment of Selaginella pallescens (Presl) Spring with Ethephon at 34 mg/liter caused the production of megasporangia in the microsporangiate files of the strobili. The possibility that ethylene may be involved in the regulation of heterospory in Selaginella is discussed.Keywords
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